The biggest environmental impact to mega data centers is their energy consumption for the processing, storage, and cooling required. The data center for Next Generation Data outside Newport has its own energy substation that provides 90 megavolt-amperes of electrical power. That's roughly equivalent to the requirements of a city of 400,000 people. Multiply this by the dozens of other mega data centers going online, including huge facilities such as Microsoft's new 700,000-square-foot center near Chicago,and the energy requirements increase around the world. Adding the energy needs of mega data centers to the increasing energy demands of developing countries with huge populations such as China and India results in unprecedented worldwide energy consumption.